eslintrc-js.json

/*
https://eslint.org/docs/rules/
https://www.npmjs.com/package/@typescript-eslint/eslint-plugin
https://www.npmjs.com/package/eslint-config-airbnb
https://www.npmjs.com/package/eslint-config-airbnb-typescript
https://github.com/iamturns/create-exposed-app/blob/master/.eslintrc.js

需要安装的 vscode 插件
eslint
prettier

需要 npm 安装的库:
eslint (npm i -g)
jest (npm i -g)
eslint-config-airbnb-base // js 专用 lint
eslint-plugin-promise // promise 用法
eslint-plugin-jest  // jest unit test
eslint-config-prettier // 这个包主要是用来 disable 某些有冲突的 rules, 所以要放到最后
*/
{
  "extends": [
    // "eslint:recommended"
    "airbnb-base", // js 专用
    "plugin:jest/recommended",
    "plugin:promise/recommended", // promise
    "prettier" // prettier 必须放在最后
  ],
  "env": {
    "node": true,
    "browser": true,
    "es6": true,
    // "jest/globals": true
  },
  "plugins": ["promise", "jest"],
  // 不需要检查的文件
  "ignorePatterns": [
    ".vscode",
    "node_modules",
    "**/vendor/",
    "/coverage", // jest --coverage
    "**/*.config.js"
  ],
  "rules": {
    "no-console": 0, // DEBUG use only.
    "no-prototype-builtins": "off",
    "import/extensions": ["error", "always", { "ignorePackages": true }], // import 文件需要后缀名。
    "import/prefer-default-export": "off",
    // "import/no-default-export": "error",
    "curly": "error", // FIXME not working, 强制 if/for/do/while 使用一致的括号风格
    "no-bitwise": "off", // 不允许使用特殊运算符 &, &=, |, |=, ^, ^=, <<, <<=, >>, >>=, >>>, >>>=, ~
    "complexity": "warn", // default 20
    "no-param-reassign": "off", // 不能给函数入参赋值，引用类型应该可以赋值

    // 功能检查
    "max-len": ["warn", { "code": 120 }],
    "max-lines": ["warn", 500], // 文件不超过 n 行

    // js 专用
    "no-use-before-define": [
      "error",
      { "functions": false, "classes": true, "variables": true }
    ]
  },
  // VVI set jest version
  "settings": {
    "jest": {
      "version": 27
    }
  }
}